.right-aside {
  z-index: 1;
  display: inline-block;
  width: 300px;
  height: 100%;
  padding: 16px;
  background-color: white;
  border-left: 1px #c0c0c0 solid;
  box-shadow: -1px 0px 5px #c0c0c0;

  .question-list {
    height: calc(100% - 60px);
    overflow-y: auto;
  }
}
